Which one is true about secondhand smoke? Inhaled by non-smokers

Causes headaches and coughing

Contains the same ingredients as the smoke inhaled

All of the above

An _ exposure is a repeated or prolonged exposure(over months or years) that may bring about slowly developing symptoms.

Which action occurs in the third stage of cell division a. the nuclear material of a cell is copied exactly b. the nuclear membrane disappears c. the cell forms two nuclei or d. the nuclear material separates, with half moving to wither side of the cell

For yokos physical fitness class she is supposed to do a certain amount of aerobic exercise what is best for her